1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/types.h>
3
4 #include <asm/xen/hypercall.h>
5 #include <asm/xen/page.h>
6
7 #include <asm/fixmap.h>
8
9 #include "xen-ops.h"
10
11 void xen_pv_pre_suspend(void)
12 {
13 xen_mm_pin_all();
14
15 xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
16 xen_start_info->console.domU.mfn =
17 mfn_to_pfn(xen_start_info->console.domU.mfn);
18
19 BUG_ON(!irqs_disabled());
20
21 HYPERVISOR_shared_info = &xen_dummy_shared_info;
22 if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
23 __pte_ma(0), 0))
24 BUG();
25 }
26
27 void xen_pv_post_suspend(int suspend_cancelled)
28 {
29 xen_build_mfn_list_list();
30 set_fixmap(FIX_PARAVIRT_BOOTMAP, xen_start_info->shared_info);
31 HYPERVISOR_shared_info = (void *)fix_to_virt(FIX_PARAVIRT_BOOTMAP);
32 xen_setup_mfn_list_list();
33
34 if (suspend_cancelled) {
35 xen_start_info->store_mfn =
36 pfn_to_mfn(xen_start_info->store_mfn);
37 xen_start_info->console.domU.mfn =
38 pfn_to_mfn(xen_start_info->console.domU.mfn);
39 } else {
40 #ifdef CONFIG_SMP
41 BUG_ON(xen_cpu_initialized_map == NULL);
42 cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
43 #endif
44 xen_vcpu_restore();
45 }
46
47 xen_mm_unpin_all();
48 }
49
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